The best way for the organization to take advantage of the supplier relationship feature of the Cloud Controls Matrix (CCM) is to leverage this feature to enable a smarter selection of the next cloud provider. The supplier relationship feature is a column in the CCM spreadsheet that indicates whether a control is influenced by contractual agreements between the cloud service provider and the cloud customer. This feature can help the organization to identify and compare the security and compliance capabilities of different cloud providers, as well as to negotiate and customize the terms of service (TOS) and service level agreements (SLA) according to their needs and requirements123.
The other options are not the best ways to use the supplier relationship feature. Option A, filter out only those controls directly influenced by contractual agreements, is not a good way to use the feature because it would exclude other important controls that are not influenced by contractual agreements, but still relevant for cloud security and governance. Option B, leverage this feature to enable the adoption of the Shared Responsibility Model, is not a good way to use the feature because the Shared Responsibility Model is defined by another column in the CCM spreadsheet, which indicates whether a control is applicable to the cloud service provider or the cloud customer. Option C, filter out only those controls having a direct impact on current TOS and SLA, is not a good way to use the feature because it would exclude other controls that may have an indirect or potential impact on the TOS and SLA, or that may be subject to change or negotiation in the future. References
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* What is CAIQ? | CSA - Cloud Security Alliance1
* Understanding the Cloud Control Matrix | CloudBolt Software3
* Cloud Controls Matrix (CCM) - CSA2